![Ake Fagereng](https://profiles-cardiff.imgix.net/attachments/1719?w=200&h=200&auto=format&crop=faces&fit=crop&q=90")
Yr Athro Ake Fagereng
Athro mewn Daeareg Strwythurol
Ysgol Gwyddorau'r Ddaear a'r Amgylchedd
- FagerengA@caerdydd.ac.uk
- +44 29208 70760
- Y Prif Adeilad, Ystafell 2.09, Plas y Parc, Caerdydd, CF10 3AT
- Ar gael fel goruchwyliwr ôl-raddedig
Trosolwyg
Interests
The broad field of structural geology as applied to understand rock deformation at all scales in multiple settings, with focus on: Earthquake Geology; Fault Rocks; Hydrothermal Vein Systems; Rheology of Polyphase Materials; Geological Controls on the Seismic Style of Active Faults; Melanges; Microstructures and Deformation Mechanisms; Subduction Zones; Oceanic Transform Faults; Continental Rifts
Detailed information of research activities, and general updates on research plans and ideas, can also be found on my external research web pages: http://akefagereng.wordpress.com
Cyhoeddiad
2023
- Williams, J. N. et al. 2023. Fault-based probabilistic seismic hazard analysis in regions with low strain rates and a thick seismogenic layer: a case study from Malawi. Geophysical Journal International 233(3), pp. 2172–2206. (10.1093/gji/ggad060)
- Angiboust, S., Cambeses, A., Fagereng, A., Menegon, L., Klein, F., Raimondo, T. and Prigent, C. 2023. Fluids in the Earth's lithosphere: From petrology to geodynamics. Lithos 452-45, article number: 107226. (10.1016/j.lithos.2023.107226)
- Wang, M. et al. 2023. Compactive deformation of incoming calcareous pelagic sediments, northern Hikurangi subduction margin, New Zealand: Implications for subduction processes. Earth and Planetary Science Letters 605, article number: 118022. (10.1016/j.epsl.2023.118022)
2022
- Dulanya, Z., Gallen, S. F., Kolawole, F., Williams, J. N., Wedmore, L. N. J., Biggs, J. and Fagereng, ?. 2022. Knickpoint morphotectonics of the Middle Shire River basin: Implications for the evolution of rift interaction zones. Basin Research 34(6), pp. 1839-1858. (10.1111/bre.12687)
- Carpenter, M. et al. 2022. Comparing intrarift and border fault structure in the Malawi Rift: Implications for normal fault growth. Journal of Structural Geology 165, article number: 104761. (10.1016/j.jsg.2022.104761)
- Churchill, R. M., Werner, M. J., Biggs, J. and Fagereng, A. 2022. Relative afterslip moment does not correlate with aftershock productivity: implications for the relationship between afterslip and aftershocks. Geophysical Research Letters 49(24), article number: e2022GL101165. (10.1029/2022gl101165)
- Williams, J. et al. 2022. Geologic and geodetic constraints on the magnitude and frequency of earthquakes along Malawi’s active faults: the Malawi seismogenic source model (MSSM). Natural Hazards and Earth System Sciences 22(11), pp. 3607-3639. (10.5194/nhess-22-3607-2022)
- Bateman, K. M. et al. 2022. Strategies for effective unmanned aerial vehicle use in geological field studies based on cognitive science principles. Geosphere 18(6), pp. 1958-1973. (10.1130/GES02440.1)
- Leah, H. and Fagereng, ?. 2022. Inherited heterogeneities can control viscous subduction zone deformation of carbonates at seismogenic depths. Geophysical Research Letters 49(19), article number: e2022GL099358. (10.1029/2022GL099358)
- Beall, A., van den Ende, M., Ampuero, J., Capitanio, F. A. and Fagereng, ?. 2022. Linking earthquake magnitude‐frequency statistics and stress in visco‐frictional fault zone models. Geophysical Research Letters 49(20), article number: e2022GL099247. (10.1029/2022gl099247)
- Tulley, C. J., Fagereng, ?., Ujiie, K., Diener, J. F. A. and Harris, C. 2022. Embrittlement within viscous shear zones across the base of the subduction thrust seismogenic zone. Geochemistry, Geophysics, Geosystems 23(8), article number: e2021GC010208. (10.1029/2021GC010208)
- Morgan, J. K. et al. 2022. Seafloor overthrusting causes ductile fault deformation and fault sealing along the Northern Hikurangi Margin. Earth and Planetary Science Letters 593, article number: 117651. (10.1016/j.epsl.2022.117651)
- Leah, H., Fagereng, A., Groome, N., Buchs, D., Eijsink, A. and Niemeijer, A. 2022. Heterogeneous subgreenschist deformation in an exhumed sediment‐poor mélange. Journal of Geophysical Research. Solid Earth 127(8), article number: e2022JB024353. (10.1029/2022jb024353)
- Leah, H. et al. 2022. The northern Hikurangi margin three-dimensional plate interface in New Zealand remains rough 100 km from the trench. Geology 50(11), pp. 1256-1260. (10.1130/G50272.1)
- Tulley, C. J., Fagereng, ?., Ujiie, K., Piazolo, S., Tarling, M. S. and Mori, Y. 2022. Rheology of naturally deformed antigorite serpentinite: strain and strain‐rate dependence at mantle‐wedge conditions. Geophysical Research Letters 49(16), article number: e2022GL098945. (10.1029/2022gl098945)
- Ujiie, K. et al. 2022. Megathrust shear modulated by Albite Metasomatism in subduction mélanges. Geochemistry, Geophysics, Geosystems 23(8), article number: e2022GC010569. (10.1029/2022gc010569)
- Williams, J. N. et al. 2022. The Malawi Active Fault Database: an onshore-offshore database for regional assessment of seismic hazard and tectonic evolution. Geochemistry, Geophysics, Geosystems 23(5), article number: e2022GC010425. (10.1029/2022GC010425)
- Churchill, R. M., Werner, M. J., Biggs, J. and Fagereng, ?. 2022. Afterslip moment scaling and variability from a global compilation of estimates. Journal of Geophysical Research. Solid Earth 127(4), article number: e2021JB023897. (10.1029/2021JB023897)
- Williams, J. N., Fagereng, A., Wedmore, L. N. J., Biggs, J., Mdala, H., Mphepo, F. and Hodge, M. 2022. Low dissipation of earthquake energy where a fault follows pre-existing weaknesses: field and microstructural observations of Malawi's Bilila-Mtakataka Fault. Geophysical Research Letters 49(8), article number: e2021GL095286. (10.1029/2021GL095286)
- Williams, R. T. and Fagereng, ?. 2022. The role of quartz cementation in the seismic cycle: a critical review. Reviews of Geophysics 60(1), article number: e2021RG000768. (10.1029/2021RG000768)
2021
- Cox, S., Ikari, M. J., MacLeod, C. J. and Fagereng, ?. 2021. Frictional characteristics of oceanic transform faults: progressive deformation and alteration controls seismic style. Geophysical Research Letters 48(24), article number: e2021GL096292. (10.1029/2021GL096292)
- Menegon, L. and Fagereng, ?. 2021. Tectonic pressure gradients during viscous creep drive fluid flow and brittle failure at the base of the seismogenic zone. Geology 49(10), pp. 1255–1259. (10.1130/G49012.1)
- Wedmore, L. N. J. et al. 2021. Geodetic constraints on cratonic microplates and broad strain during rifting of thick Southern African lithosphere. Geophysical Research Letters 48(17), article number: e2021GL093785. (10.1029/2021GL093785)
- Savage, H. M. et al. 2021. Asymmetric brittle deformation at the Pāpaku Fault, Hikurangi Subduction Margin, NZ, IODP Expedition 375. Geochemistry, Geophysics, Geosystems 22(8), article number: e2021GC009662. (10.1029/2021GC009662)
- Coffey, G. L. et al. 2021. Evidence of seismic slip on a large splay fault in the Hikurangi subduction zone. Geochemistry, Geophysics, Geosystems 22(8), article number: e2021GC009638. (10.1029/2021GC009638)
- Cox, S., Fagereng, ?. and MacLeod, C. J. 2021. Shear zone development in serpentinised mantle: Implications for the strength of oceanic transform faults. Journal of Geophysical Research: Solid Earth 126(5), article number: e2020JB020763. (10.1029/2020JB020763)
- Kirkpatrick, J. D., Fagereng, ?. and Shelly, D. R. 2021. Geological constraints on the mechanisms of slow earthquakes. Nature Reviews Earth & Environment 2, pp. 285-301. (10.1038/s43017-021-00148-w)
- McNamara, D. D. et al. 2021. Variable in situ stress orientations across the Northern Hikurangi Subduction Margin. Geophysical Research Letters 48(5), article number: e2020GL091707. (10.1029/2020GL091707)
- Williams, J. N. et al. 2021. A systems-based approach to parameterise seismic hazard in regions with little historical or instrumental seismicity: active fault and seismogenic source databases for southern Malawi. Solid Earth 12(1), pp. 187-217. (10.5194/se-12-187-2021)
2020
- Wedmore, L. N. et al. 2020. Structural inheritance and border fault reactivation during active early-stage rifting along the Thyolo fault, Malawi. Journal of Structural Geology 139, article number: 104097. (10.1016/j.jsg.2020.104097)
- Leah, H. et al. 2020. Mixed brittle and viscous strain localisation in pelagic sediments seaward of the Hikurangi margin, New Zealand. Tectonics 39(8), article number: e2019TC005965. (10.1029/2019TC005965)
- Stenvall, C. A., Fagereng, A., Diener, J. F. A., Harris, C. and Janney, P. E. 2020. Sources and effects of fluids in continental retrograde shear zones: Insights from the Kuckaus Mylonite Zone, Namibia. Geofluids 2020, article number: 3023268. (10.1155/2020/3023268)
- Tulley, C. J., Fagereng, ?. and Ujiie, K. 2020. Hydrous oceanic crust hosts megathrust creep at low shear stresses. Science Advances 6(22), article number: eaba1529. (10.1126/sciadv.aba1529)
- Prior-Jones, M., Pinnion, J., Millet, M., Bagshaw, E., Fagereng, A. and Ballinger, R. 2020. An inclusive risk assessment tool for travel and fieldwork. Presented at: EGU General Assembly 2020, Online, 4-8 May 2020. Copernicus {GmbH}, (10.5194/egusphere-egu2020-7678)
- Fagereng, ?. and Ikari, M. J. 2020. Low‐temperature frictional characteristics of chlorite‐epidote‐amphibole assemblages: implications for strength and seismic style of retrograde fault zones. Journal of Geophysical Research. Solid Earth 125(4), article number: e2020JB019487. (10.1029/2020JB019487)
- Barnes, P. M. et al. 2020. Slow slip source characterized by lithological and geometric heterogeneity. Science Advances 6(13), article number: eaay3314. (10.1126/sciadv.aay3314)
- Campbell, L. R., Menegon, L., Fagereng, ?. and Pennacchioni, G. 2020. Earthquake nucleation in the lower crust by local stress amplification. Nature Communications 11, article number: 1322. (10.1038/s41467-020-15150-x)
- Hodge, M., Biggs, J., Fagereng, A., Mdala, H., Wedmore, L. and Williams, J. 2020. Evidence from high resolution topography for multiple earthquakes on high slip-to-length fault scarps: the Bilila-Mtakataka fault, Malawi. Tectonics 39(2), article number: e2019TC005933. (10.1029/2019TC005933)
- Wedmore, L., Biggs, J., Williams, J., Fagereng, ?., Dulanya, Z., Mphepo, F. and Mdala, H. 2020. Active fault scarps in southern Malawi and their implications for the distribution of strain in incipient continental rifts. Tectonics, pp. -. (10.1029/2019TC005834)
2019
- Ellis, S., Ghisetti, F., Barnes, P. M., Boulton, C., Fagereng, ?. and Buiter, S. 2019. The contemporary force balance in a wide accretionary wedge: numerical models of the south-central Hikurangi margin of New Zealand. Geophysical Journal International 219(2), pp. 776-795. (10.1093/gji/ggz317)
- Beall, A., Fagereng, A. and Ellis, S. 2019. Fracture and weakening of jammed subduction shear zones, leading to the generation of slow slip events. Geochemistry Geophysics Geosystems 20(11), pp. 4869-4884. (10.1029/2019GC008481)
- Hellebrekers, N., Niemeijer, A. R., Fagereng, ?., Manda, B. and Mvula, R. L. 2019. Lower crustal earthquakes in the East African Rift System: Insights from frictional properties of rock samples from the Malawi rift. Tectonophysics 767, pp. 228167., article number: 228167. (10.1016/j.tecto.2019.228167)
- Fagereng, ?. and Biggs, J. 2019. New perspectives on 'geological strain rates' calculated from both naturally deformed and actively deforming rocks. Journal of Structural Geology 125, pp. 100-110. (10.1016/j.jsg.2018.10.004)
- Stenvall, C., Fagereng, ?. and Diener, J. 2019. Weaker than weakest: on the strength of shear zones. Geophysical Research Letters 46(13), pp. 7404-7413. (10.1029/2019GL083388)
- Fagereng, A. et al. 2019. Mixed deformation styles on a shallow subduction thrust, Hikurangi margin, New Zealand. Geology 47(9), pp. 872-876. (10.1130/G46367.1)
- Williams, J. N. et al. 2019. How do variably striking faults reactivate during rifting? insights from Southern Malawi. Geochemistry, Geophysics, Geosystems 20(7), pp. 3588-3607. (10.1029/2019GC008219)
- Beall, A., Fagereng, A. and Ellis, S. 2019. Strength of strained two-phase mixtures: Application to rapid creep and stress amplification in subduction zone mélange. Geophysical Research Letters 46(1), pp. 169-178. (10.1029/2018GL081252)
- Hodge, M., Biggs, J., Fagereng, ?., Elliott, A., Mdala, H. and Mphepo, F. 2019. A semi-automated algorithm to quantify scarp morphology (SPARTA): application to normal faults in southern Malawi. Solid Earth 10(1), pp. 27-57. (10.5194/se-10-27-2019)
- Fagereng, A. and MacLeod, C. 2019. On seismicity and structural style of oceanic transform faults: A field geological perspective from the Troodos Ophiolite, Cyprus. In: Duarte, J. S. ed. Transform Plate Boundaries and Fracture Zones. Elsevier Books, pp. 437-459., (10.1016/B978-0-12-812064-4.00018-9)
- Fagereng, ?. 2019. Chapter 4 - What do earthquake magnitudes mean? Example of the Kaikōura, New Zealand, 2016 Event. In: Billi, A. and Fagereng, A. eds. Problems and Solutions in Structural Geology and Tectonics., Vol. 5. Developments in Structural Geology and Tectonics Elsevier, pp. 57-64., (10.1016/B978-0-12-814048-2.00004-1)
- Fagereng, ?. and Toy, V. G. 2019. Chapter 5 - Fluid-pressure effects on deformation: Analysis of the Lusi Mud Volcano. In: Billi, A. and Fagereng, A. eds. Problems and Solutions in Structural Geology and Tectonics., Vol. 5. Developments in Structural Geology and Tectonics Elsevier, pp. 67-74., (10.1016/B978-0-12-814048-2.00005-3)
2018
- Fagereng, A., Diener, J. F., Ellis, S. and Remitti, F. 2018. Fluid-related deformation processes at the up- and downdip limits of the subduction thrust seismogenic zone: What do the rocks tell us?. In: Byrne, T. et al. eds. Geology and Tectonics of Subduction Zones: A Tribute to Gaku Kimura., Vol. 534. GSA Special Papers Geological Society of America, (10.1130/2018.2534(12))
- Ujiie, K., Saishu, H., Fagereng, ?., Nishiyama, N., Otsubo, M., Masuyama, H. and Kagi, H. 2018. An explanation of episodic tremor and slow slip constrained by crack-seal veins and viscous shear in subduction mélange. Geophysical Research Letters 45(11), pp. 5371-5379. (10.1029/2018GL078374)
- Hodge, M., Fagereng, A., Biggs, J. and Mdala, H. 2018. Controls on early‐rift geometry: new perspectives from the Bilila‐Mtakataka fault, Malawi. Geophysical Research Letters (10.1029/2018gl077343)
- Webber, S., Ellis, S. and Fagereng, A. 2018. "Virtual shear box" experiments of stress and slip cycling within a subduction interface mélange. Earth and Planetary Science Letters 488, pp. 27-35. (10.1016/j.epsl.2018.01.035)
- Hodge, M., Fagereng, A. and Biggs, J. 2018. The role of coseismic Coulomb stress changes in shaping the hard-link between normal fault segments. Journal of Geophysical Research: Solid Earth 123(1), pp. 797-814. (10.1002/2017JB014927)
- Fagereng, A., Diener, J. F. A., Meneghini, F., Harris, C. and Kvadsheim, A. 2018. Quartz vein formation by local dehydration embrittlement along the deep, tremorgenic subduction thrust interface. Geology 46(1), pp. 67-70. (10.1130/G39649.1)
2017
- Meneghini, F., Fagereng, A. and Kisters, A. 2017. The matchless amphibolite of the Damara belt, Namibia: unique preservation of a late Neoproterozoic ophiolitic suture. Ofioliti 42(2), pp. 129-145. (10.4454/ofioliti.v42i2.488)
- Fagereng, A. and den Hartog, S. A. M. 2017. Subduction megathrust creep governed by pressure solution and frictional-viscous flow. Nature Geoscience 10(1), pp. 51-57. (10.1038/ngeo2857)
2016
- Diener, J. F. A., Fagereng, A. and Thomas, S. 2016. Mid-crustal shear zone development under retrograde conditions: pressure–temperature–fluid constraints from the Kuckaus Mylonite Zone, Namibia. Solid Earth 7(5), pp. 1331-1347. (10.5194/se-7-1331-2016)
2015
- Cross, C. B., Diener, J. F. A. and Fagereng, A. 2015. Metamorphic imprint of accretion and ridge subduction in the Pan-African Damara Belt, Namibia. Journal of Metamorphic Geology 33(6), pp. 633-648. (10.1111/jmg.12139)
- Ellis, S. et al. 2015. Fluid budgets along the northern Hikurangi subduction margin, New Zealand: the effect of a subducting seamount on fluid pressure. Geophysical Journal International 202(1), pp. 277-297. (10.1093/gji/ggv127)
- Smit, L., Fagereng, A., Braeuer, B. and Stankiewicz, J. 2015. Microseismic activity and basement controls on an active intraplate strike-slip fault, Ceres-Tulbagh, South Africa. Bulletin of the Seismological Society of America 105(3), pp. 1540-1547. (10.1785/0120140262)
- Senger, K. et al. 2015. Fracturing of doleritic intrusions and associated contact zones: Implications for fluid flow in volcanic basins. Journal of African Earth Sciences 102, pp. 70-85. (10.1016/j.jafrearsci.2014.10.019)
- Fagereng, A. and Byrnes, G. 2015. A range of fault slip styles on progressively misoriented planes during flexural-slip folding, Cape Fold Belt, South Africa. Journal of Structural Geology 70, pp. 156-169. (10.1016/j.jsg.2014.12.001)
2014
- Faber, C., Rowe, C. D., Miller, J. A., Fagereng, A. and Neethling, J. H. 2014. Silica gel in a fault slip surface: Field evidence for palaeo-earthquakes?. Journal of Structural Geology 69(A), pp. 108-121. (10.1016/j.jsg.2014.09.021)
- Meneghini, F., Kisters, A., Buick, I. and Fagereng, A. 2014. Fingerprints of late Neoproterozoic ridge subduction in the Pan-African Damara belt, Namibia. Geology 42(10), pp. 903-906. (10.1130/G35932.1)
- Fagereng, A. 2014. Significant shortening by pressure solution creep in the Dwyka diamictite, Cape Fold Belt, South Africa. Journal of African Earth Sciences 97, pp. 9-18. (10.1016/j.jafrearsci.2014.04.022)
- Diener, J. F. A. and Fagereng, A. 2014. The influence of melting and melt drainage on crustal rheology during orogenesis. Journal of Geophysical Research: Solid Earth 119(8), pp. 6193-6210. (10.1002/2014JB011088)
- Fagereng, ?., Hillary, G. W. B. and Diener, J. F. A. 2014. Brittle-viscous deformation, slow slip and tremor. Geophysical Research Letters 41(12), pp. 4159-4167. (10.1002/2014GL060433)
- Fagereng, A. and Harris, C. 2014. Interplay between fluid flow and fault-fracture mesh generation within underthrust sediments: Geochemical evidence from the Chrystalls Beach Complex, New Zealand. Tectonophysics 612-3, pp. 147-157. (10.1016/j.tecto.2013.12.002)
- Fagereng, A., Smith, Z., Rowe, C. D., Makhubu, B. and Sylvester, F. Y. G. 2014. Stress, strain, and fault behavior at a thrust ramp: Insights from the Naukluft thrust, Namibia. Journal of Structural Geology 58, pp. 95-107. (10.1016/j.jsg.2013.11.002)
2013
- Rennie, S. F., Fagereng, A. and Diener, J. F. A. 2013. Strain distribution within a km-scale, mid-crustal shear zone: The Kuckaus Mylonite Zone, Namibia. Journal of Structural Geology 56, pp. 57-69. (10.1016/j.jsg.2013.09.001)
- Fagereng, A. 2013. Fault segmentation, deep rift earthquakes and crustal rheology: Insights from the 2009 Karonga sequence and seismicity in the Rukwa-Malawi rift zone. Tectonophysics 601, pp. 216-225. (10.1016/j.tecto.2013.05.012)
- Harris, C., Fourie, D. S. and Fagereng, A. 2013. Stable isotope evidence for impact-related pseudotachylite formation at Vredefort by local melting of dry rocks. South African Journal of Geology 116(1), pp. 101-118. (10.2113/gssajg.116.1.101)
- Fagereng, A. 2013. On stress and strain in a continuous-discontinuous shear zone undergoing simple shear and volume loss. Journal of Structural Geology 50, pp. 44-53. (10.1016/j.jsg.2012.02.016)
- Treasure, A. M. et al. 2013. South African research in the Southern Ocean: New opportunities but serious challenges. South African Journal of Science 109(3-4), pp. 2-5. (10.1590/sajs.2013/a009)
2012
- Wallace, L. M., Fagereng, A. and Ellis, S. 2012. Upper plate tectonic stress state may influence interseismic coupling on subduction megathrusts. Geology 40(10), pp. 895-898. (10.1130/G33373.1)
- Rowe, C. D., Fagereng, A., Miller, J. A. and Mapani, B. 2012. Signature of coseismic decarbonation in dolomitic fault rocks of the Naukluft Thrust, Namibia. Earth and Planetary Science Letters 333-4, pp. 200-210. (10.1016/j.epsl.2012.04.030)
- Fagereng, A. 2012. A note on folding mechanisms in the Cape Fold Belt, South Africa. South African Journal of Geology 115(2), pp. 137-144. (10.2113/gssajg.115.2.137)
2011
- Fagereng, A. and Diener, J. F. A. 2011. San Andreas Fault tremor and retrograde metamorphism. Geophysical Research Letters 38(23), article number: L23303. (10.1029/2011GL049550)
- Fagereng, A., Remitti, F. and Sibson, R. H. 2011. Incrementally developed slickenfibers - Geological record of repeating low stress-drop seismic events?. Tectonophysics 510(3-4), pp. 381-386. (10.1016/j.tecto.2011.08.015)
- Fagereng, A. and Diener, J. F. A. 2011. Non-volcanic tremor and discontinuous slab dehydration. Geophysical Research Letters 38(15), article number: L15302. (10.1029/2011GL048214)
- Fagereng, A. 2011. Wedge geometry, mechanical strength, and interseismic coupling of the Hikurangi subduction thrust, New Zealand. Tectonophysics 507(1-4), pp. 26-30. (10.1016/j.tecto.2011.05.004)
- Fagereng, A. 2011. Frequency-size distribution of competent lenses in a block-in-matrix melange: Imposed length scales of brittle deformation?. Journal of Geophysical Research: Solid Earth 116(B5) (10.1029/2010JB007775)
- Fagereng, A. 2011. Fractal vein distributions within a fault-fracture mesh in an exhumed accretionary melange, Chrystalls Beach Complex, New Zealand. Journal of Structural Geology 33(5), pp. 918-927. (10.1016/j.jsg.2011.02.009)
- Fagereng, A. 2011. Geology of the seismogenic subduction thrust interface. Geological Society, London, Special Publications 359(1), pp. 55-76. (10.1144/SP359.4)
- Fagereng, A. and Toy, V. G. 2011. Geology of the earthquake source: an introduction. Geological Society, London, Special Publications 359(1), pp. 1-16. (10.1144/SP359.1)
2010
- Fagereng, A. and Cooper, A. F. 2010. The metamorphic history of rocks buried, accreted and exhumed in an accretionary prism: an example from the Otago Schist, New Zealand. Journal of Metamorphic Geology 28(9), pp. 935-954. (10.1111/j.1525-1314.2010.00900.x)
- Fagereng, A. and Sibson, R. H. 2010. Mélange rheology and seismic style. Geology 38(8), pp. 751-754. (10.1130/G30868.1)
- Fagereng, A., Remitti, F. and Sibson, R. H. 2010. Shear veins observed within anisotropic fabric at high angles to the maximum compressive stress [Letter]. Nature Geoscience 3(7), pp. 482-485. (10.1038/NGEO898)
- Fagereng, A. and Cooper, A. F. 2010. Petrology of metabasalts from the Chrystalls Beach accretionary melange - implications for tectonic setting and terrane origin. New Zealand Journal of Geology and Geophysics 53(1), pp. 57-70. (10.1080/00288301003631806)
2009
- Wallace, L. M. et al. 2009. Characterizing the seismogenic zone of a major plate boundary subduction thrust: Hikurangi Margin, New Zealand. Geochemistry, Geophysics, Geosystems 10(10) (10.1029/2009GC002610)
- Scott, J. M., Palin, J. M., Cooper, A. F., Fagereng, A. and King, R. P. 2009. Polymetamorphism, zircon growth and retention of early assemblages through the dynamic evolution of a continental arc in Fiordland, New Zealand. Journal of Metamorphic Geology 27(4), pp. 281-294. (10.1111/j.1525-1314.2009.00817.x)
- Fagereng, A. and Ellis, S. 2009. On factors controlling the depth of interseismic coupling on the Hikurangi subduction interface, New Zealand. Earth and Planetary Science Letters 278(1/2), pp. 120-130. (10.1016/j.epsl.2008.11.033)
2008
- Fagereng, A., Harris, C., La Grange, M. and Stevens, G. 2008. Stable isotope study of the Archaean rocks of the Vredefort impact structure, central Kaapvaal Craton, South Africa. Contributions to Mineralogy and Petrology 155(1), pp. 63-78. (10.1007/s00410-007-0224-6)
Articles
- Williams, J. N. et al. 2023. Fault-based probabilistic seismic hazard analysis in regions with low strain rates and a thick seismogenic layer: a case study from Malawi. Geophysical Journal International 233(3), pp. 2172–2206. (10.1093/gji/ggad060)
- Angiboust, S., Cambeses, A., Fagereng, A., Menegon, L., Klein, F., Raimondo, T. and Prigent, C. 2023. Fluids in the Earth's lithosphere: From petrology to geodynamics. Lithos 452-45, article number: 107226. (10.1016/j.lithos.2023.107226)
- Wang, M. et al. 2023. Compactive deformation of incoming calcareous pelagic sediments, northern Hikurangi subduction margin, New Zealand: Implications for subduction processes. Earth and Planetary Science Letters 605, article number: 118022. (10.1016/j.epsl.2023.118022)
- Dulanya, Z., Gallen, S. F., Kolawole, F., Williams, J. N., Wedmore, L. N. J., Biggs, J. and Fagereng, ?. 2022. Knickpoint morphotectonics of the Middle Shire River basin: Implications for the evolution of rift interaction zones. Basin Research 34(6), pp. 1839-1858. (10.1111/bre.12687)
- Carpenter, M. et al. 2022. Comparing intrarift and border fault structure in the Malawi Rift: Implications for normal fault growth. Journal of Structural Geology 165, article number: 104761. (10.1016/j.jsg.2022.104761)
- Churchill, R. M., Werner, M. J., Biggs, J. and Fagereng, A. 2022. Relative afterslip moment does not correlate with aftershock productivity: implications for the relationship between afterslip and aftershocks. Geophysical Research Letters 49(24), article number: e2022GL101165. (10.1029/2022gl101165)
- Williams, J. et al. 2022. Geologic and geodetic constraints on the magnitude and frequency of earthquakes along Malawi’s active faults: the Malawi seismogenic source model (MSSM). Natural Hazards and Earth System Sciences 22(11), pp. 3607-3639. (10.5194/nhess-22-3607-2022)
- Bateman, K. M. et al. 2022. Strategies for effective unmanned aerial vehicle use in geological field studies based on cognitive science principles. Geosphere 18(6), pp. 1958-1973. (10.1130/GES02440.1)
- Leah, H. and Fagereng, ?. 2022. Inherited heterogeneities can control viscous subduction zone deformation of carbonates at seismogenic depths. Geophysical Research Letters 49(19), article number: e2022GL099358. (10.1029/2022GL099358)
- Beall, A., van den Ende, M., Ampuero, J., Capitanio, F. A. and Fagereng, ?. 2022. Linking earthquake magnitude‐frequency statistics and stress in visco‐frictional fault zone models. Geophysical Research Letters 49(20), article number: e2022GL099247. (10.1029/2022gl099247)
- Tulley, C. J., Fagereng, ?., Ujiie, K., Diener, J. F. A. and Harris, C. 2022. Embrittlement within viscous shear zones across the base of the subduction thrust seismogenic zone. Geochemistry, Geophysics, Geosystems 23(8), article number: e2021GC010208. (10.1029/2021GC010208)
- Morgan, J. K. et al. 2022. Seafloor overthrusting causes ductile fault deformation and fault sealing along the Northern Hikurangi Margin. Earth and Planetary Science Letters 593, article number: 117651. (10.1016/j.epsl.2022.117651)
- Leah, H., Fagereng, A., Groome, N., Buchs, D., Eijsink, A. and Niemeijer, A. 2022. Heterogeneous subgreenschist deformation in an exhumed sediment‐poor mélange. Journal of Geophysical Research. Solid Earth 127(8), article number: e2022JB024353. (10.1029/2022jb024353)
- Leah, H. et al. 2022. The northern Hikurangi margin three-dimensional plate interface in New Zealand remains rough 100 km from the trench. Geology 50(11), pp. 1256-1260. (10.1130/G50272.1)
- Tulley, C. J., Fagereng, ?., Ujiie, K., Piazolo, S., Tarling, M. S. and Mori, Y. 2022. Rheology of naturally deformed antigorite serpentinite: strain and strain‐rate dependence at mantle‐wedge conditions. Geophysical Research Letters 49(16), article number: e2022GL098945. (10.1029/2022gl098945)
- Ujiie, K. et al. 2022. Megathrust shear modulated by Albite Metasomatism in subduction mélanges. Geochemistry, Geophysics, Geosystems 23(8), article number: e2022GC010569. (10.1029/2022gc010569)
- Williams, J. N. et al. 2022. The Malawi Active Fault Database: an onshore-offshore database for regional assessment of seismic hazard and tectonic evolution. Geochemistry, Geophysics, Geosystems 23(5), article number: e2022GC010425. (10.1029/2022GC010425)
- Churchill, R. M., Werner, M. J., Biggs, J. and Fagereng, ?. 2022. Afterslip moment scaling and variability from a global compilation of estimates. Journal of Geophysical Research. Solid Earth 127(4), article number: e2021JB023897. (10.1029/2021JB023897)
- Williams, J. N., Fagereng, A., Wedmore, L. N. J., Biggs, J., Mdala, H., Mphepo, F. and Hodge, M. 2022. Low dissipation of earthquake energy where a fault follows pre-existing weaknesses: field and microstructural observations of Malawi's Bilila-Mtakataka Fault. Geophysical Research Letters 49(8), article number: e2021GL095286. (10.1029/2021GL095286)
- Williams, R. T. and Fagereng, ?. 2022. The role of quartz cementation in the seismic cycle: a critical review. Reviews of Geophysics 60(1), article number: e2021RG000768. (10.1029/2021RG000768)
- Cox, S., Ikari, M. J., MacLeod, C. J. and Fagereng, ?. 2021. Frictional characteristics of oceanic transform faults: progressive deformation and alteration controls seismic style. Geophysical Research Letters 48(24), article number: e2021GL096292. (10.1029/2021GL096292)
- Menegon, L. and Fagereng, ?. 2021. Tectonic pressure gradients during viscous creep drive fluid flow and brittle failure at the base of the seismogenic zone. Geology 49(10), pp. 1255–1259. (10.1130/G49012.1)
- Wedmore, L. N. J. et al. 2021. Geodetic constraints on cratonic microplates and broad strain during rifting of thick Southern African lithosphere. Geophysical Research Letters 48(17), article number: e2021GL093785. (10.1029/2021GL093785)
- Savage, H. M. et al. 2021. Asymmetric brittle deformation at the Pāpaku Fault, Hikurangi Subduction Margin, NZ, IODP Expedition 375. Geochemistry, Geophysics, Geosystems 22(8), article number: e2021GC009662. (10.1029/2021GC009662)
- Coffey, G. L. et al. 2021. Evidence of seismic slip on a large splay fault in the Hikurangi subduction zone. Geochemistry, Geophysics, Geosystems 22(8), article number: e2021GC009638. (10.1029/2021GC009638)
- Cox, S., Fagereng, ?. and MacLeod, C. J. 2021. Shear zone development in serpentinised mantle: Implications for the strength of oceanic transform faults. Journal of Geophysical Research: Solid Earth 126(5), article number: e2020JB020763. (10.1029/2020JB020763)
- Kirkpatrick, J. D., Fagereng, ?. and Shelly, D. R. 2021. Geological constraints on the mechanisms of slow earthquakes. Nature Reviews Earth & Environment 2, pp. 285-301. (10.1038/s43017-021-00148-w)
- McNamara, D. D. et al. 2021. Variable in situ stress orientations across the Northern Hikurangi Subduction Margin. Geophysical Research Letters 48(5), article number: e2020GL091707. (10.1029/2020GL091707)
- Williams, J. N. et al. 2021. A systems-based approach to parameterise seismic hazard in regions with little historical or instrumental seismicity: active fault and seismogenic source databases for southern Malawi. Solid Earth 12(1), pp. 187-217. (10.5194/se-12-187-2021)
- Wedmore, L. N. et al. 2020. Structural inheritance and border fault reactivation during active early-stage rifting along the Thyolo fault, Malawi. Journal of Structural Geology 139, article number: 104097. (10.1016/j.jsg.2020.104097)
- Leah, H. et al. 2020. Mixed brittle and viscous strain localisation in pelagic sediments seaward of the Hikurangi margin, New Zealand. Tectonics 39(8), article number: e2019TC005965. (10.1029/2019TC005965)
- Stenvall, C. A., Fagereng, A., Diener, J. F. A., Harris, C. and Janney, P. E. 2020. Sources and effects of fluids in continental retrograde shear zones: Insights from the Kuckaus Mylonite Zone, Namibia. Geofluids 2020, article number: 3023268. (10.1155/2020/3023268)
- Tulley, C. J., Fagereng, ?. and Ujiie, K. 2020. Hydrous oceanic crust hosts megathrust creep at low shear stresses. Science Advances 6(22), article number: eaba1529. (10.1126/sciadv.aba1529)
- Fagereng, ?. and Ikari, M. J. 2020. Low‐temperature frictional characteristics of chlorite‐epidote‐amphibole assemblages: implications for strength and seismic style of retrograde fault zones. Journal of Geophysical Research. Solid Earth 125(4), article number: e2020JB019487. (10.1029/2020JB019487)
- Barnes, P. M. et al. 2020. Slow slip source characterized by lithological and geometric heterogeneity. Science Advances 6(13), article number: eaay3314. (10.1126/sciadv.aay3314)
- Campbell, L. R., Menegon, L., Fagereng, ?. and Pennacchioni, G. 2020. Earthquake nucleation in the lower crust by local stress amplification. Nature Communications 11, article number: 1322. (10.1038/s41467-020-15150-x)
- Hodge, M., Biggs, J., Fagereng, A., Mdala, H., Wedmore, L. and Williams, J. 2020. Evidence from high resolution topography for multiple earthquakes on high slip-to-length fault scarps: the Bilila-Mtakataka fault, Malawi. Tectonics 39(2), article number: e2019TC005933. (10.1029/2019TC005933)
- Wedmore, L., Biggs, J., Williams, J., Fagereng, ?., Dulanya, Z., Mphepo, F. and Mdala, H. 2020. Active fault scarps in southern Malawi and their implications for the distribution of strain in incipient continental rifts. Tectonics, pp. -. (10.1029/2019TC005834)
- Ellis, S., Ghisetti, F., Barnes, P. M., Boulton, C., Fagereng, ?. and Buiter, S. 2019. The contemporary force balance in a wide accretionary wedge: numerical models of the south-central Hikurangi margin of New Zealand. Geophysical Journal International 219(2), pp. 776-795. (10.1093/gji/ggz317)
- Beall, A., Fagereng, A. and Ellis, S. 2019. Fracture and weakening of jammed subduction shear zones, leading to the generation of slow slip events. Geochemistry Geophysics Geosystems 20(11), pp. 4869-4884. (10.1029/2019GC008481)
- Hellebrekers, N., Niemeijer, A. R., Fagereng, ?., Manda, B. and Mvula, R. L. 2019. Lower crustal earthquakes in the East African Rift System: Insights from frictional properties of rock samples from the Malawi rift. Tectonophysics 767, pp. 228167., article number: 228167. (10.1016/j.tecto.2019.228167)
- Fagereng, ?. and Biggs, J. 2019. New perspectives on 'geological strain rates' calculated from both naturally deformed and actively deforming rocks. Journal of Structural Geology 125, pp. 100-110. (10.1016/j.jsg.2018.10.004)
- Stenvall, C., Fagereng, ?. and Diener, J. 2019. Weaker than weakest: on the strength of shear zones. Geophysical Research Letters 46(13), pp. 7404-7413. (10.1029/2019GL083388)
- Fagereng, A. et al. 2019. Mixed deformation styles on a shallow subduction thrust, Hikurangi margin, New Zealand. Geology 47(9), pp. 872-876. (10.1130/G46367.1)
- Williams, J. N. et al. 2019. How do variably striking faults reactivate during rifting? insights from Southern Malawi. Geochemistry, Geophysics, Geosystems 20(7), pp. 3588-3607. (10.1029/2019GC008219)
- Beall, A., Fagereng, A. and Ellis, S. 2019. Strength of strained two-phase mixtures: Application to rapid creep and stress amplification in subduction zone mélange. Geophysical Research Letters 46(1), pp. 169-178. (10.1029/2018GL081252)
- Hodge, M., Biggs, J., Fagereng, ?., Elliott, A., Mdala, H. and Mphepo, F. 2019. A semi-automated algorithm to quantify scarp morphology (SPARTA): application to normal faults in southern Malawi. Solid Earth 10(1), pp. 27-57. (10.5194/se-10-27-2019)
- Ujiie, K., Saishu, H., Fagereng, ?., Nishiyama, N., Otsubo, M., Masuyama, H. and Kagi, H. 2018. An explanation of episodic tremor and slow slip constrained by crack-seal veins and viscous shear in subduction mélange. Geophysical Research Letters 45(11), pp. 5371-5379. (10.1029/2018GL078374)
- Hodge, M., Fagereng, A., Biggs, J. and Mdala, H. 2018. Controls on early‐rift geometry: new perspectives from the Bilila‐Mtakataka fault, Malawi. Geophysical Research Letters (10.1029/2018gl077343)
- Webber, S., Ellis, S. and Fagereng, A. 2018. "Virtual shear box" experiments of stress and slip cycling within a subduction interface mélange. Earth and Planetary Science Letters 488, pp. 27-35. (10.1016/j.epsl.2018.01.035)
- Hodge, M., Fagereng, A. and Biggs, J. 2018. The role of coseismic Coulomb stress changes in shaping the hard-link between normal fault segments. Journal of Geophysical Research: Solid Earth 123(1), pp. 797-814. (10.1002/2017JB014927)
- Fagereng, A., Diener, J. F. A., Meneghini, F., Harris, C. and Kvadsheim, A. 2018. Quartz vein formation by local dehydration embrittlement along the deep, tremorgenic subduction thrust interface. Geology 46(1), pp. 67-70. (10.1130/G39649.1)
- Meneghini, F., Fagereng, A. and Kisters, A. 2017. The matchless amphibolite of the Damara belt, Namibia: unique preservation of a late Neoproterozoic ophiolitic suture. Ofioliti 42(2), pp. 129-145. (10.4454/ofioliti.v42i2.488)
- Fagereng, A. and den Hartog, S. A. M. 2017. Subduction megathrust creep governed by pressure solution and frictional-viscous flow. Nature Geoscience 10(1), pp. 51-57. (10.1038/ngeo2857)
- Diener, J. F. A., Fagereng, A. and Thomas, S. 2016. Mid-crustal shear zone development under retrograde conditions: pressure–temperature–fluid constraints from the Kuckaus Mylonite Zone, Namibia. Solid Earth 7(5), pp. 1331-1347. (10.5194/se-7-1331-2016)
- Cross, C. B., Diener, J. F. A. and Fagereng, A. 2015. Metamorphic imprint of accretion and ridge subduction in the Pan-African Damara Belt, Namibia. Journal of Metamorphic Geology 33(6), pp. 633-648. (10.1111/jmg.12139)
- Ellis, S. et al. 2015. Fluid budgets along the northern Hikurangi subduction margin, New Zealand: the effect of a subducting seamount on fluid pressure. Geophysical Journal International 202(1), pp. 277-297. (10.1093/gji/ggv127)
- Smit, L., Fagereng, A., Braeuer, B. and Stankiewicz, J. 2015. Microseismic activity and basement controls on an active intraplate strike-slip fault, Ceres-Tulbagh, South Africa. Bulletin of the Seismological Society of America 105(3), pp. 1540-1547. (10.1785/0120140262)
- Senger, K. et al. 2015. Fracturing of doleritic intrusions and associated contact zones: Implications for fluid flow in volcanic basins. Journal of African Earth Sciences 102, pp. 70-85. (10.1016/j.jafrearsci.2014.10.019)
- Fagereng, A. and Byrnes, G. 2015. A range of fault slip styles on progressively misoriented planes during flexural-slip folding, Cape Fold Belt, South Africa. Journal of Structural Geology 70, pp. 156-169. (10.1016/j.jsg.2014.12.001)
- Faber, C., Rowe, C. D., Miller, J. A., Fagereng, A. and Neethling, J. H. 2014. Silica gel in a fault slip surface: Field evidence for palaeo-earthquakes?. Journal of Structural Geology 69(A), pp. 108-121. (10.1016/j.jsg.2014.09.021)
- Meneghini, F., Kisters, A., Buick, I. and Fagereng, A. 2014. Fingerprints of late Neoproterozoic ridge subduction in the Pan-African Damara belt, Namibia. Geology 42(10), pp. 903-906. (10.1130/G35932.1)
- Fagereng, A. 2014. Significant shortening by pressure solution creep in the Dwyka diamictite, Cape Fold Belt, South Africa. Journal of African Earth Sciences 97, pp. 9-18. (10.1016/j.jafrearsci.2014.04.022)
- Diener, J. F. A. and Fagereng, A. 2014. The influence of melting and melt drainage on crustal rheology during orogenesis. Journal of Geophysical Research: Solid Earth 119(8), pp. 6193-6210. (10.1002/2014JB011088)
- Fagereng, ?., Hillary, G. W. B. and Diener, J. F. A. 2014. Brittle-viscous deformation, slow slip and tremor. Geophysical Research Letters 41(12), pp. 4159-4167. (10.1002/2014GL060433)
- Fagereng, A. and Harris, C. 2014. Interplay between fluid flow and fault-fracture mesh generation within underthrust sediments: Geochemical evidence from the Chrystalls Beach Complex, New Zealand. Tectonophysics 612-3, pp. 147-157. (10.1016/j.tecto.2013.12.002)
- Fagereng, A., Smith, Z., Rowe, C. D., Makhubu, B. and Sylvester, F. Y. G. 2014. Stress, strain, and fault behavior at a thrust ramp: Insights from the Naukluft thrust, Namibia. Journal of Structural Geology 58, pp. 95-107. (10.1016/j.jsg.2013.11.002)
- Rennie, S. F., Fagereng, A. and Diener, J. F. A. 2013. Strain distribution within a km-scale, mid-crustal shear zone: The Kuckaus Mylonite Zone, Namibia. Journal of Structural Geology 56, pp. 57-69. (10.1016/j.jsg.2013.09.001)
- Fagereng, A. 2013. Fault segmentation, deep rift earthquakes and crustal rheology: Insights from the 2009 Karonga sequence and seismicity in the Rukwa-Malawi rift zone. Tectonophysics 601, pp. 216-225. (10.1016/j.tecto.2013.05.012)
- Harris, C., Fourie, D. S. and Fagereng, A. 2013. Stable isotope evidence for impact-related pseudotachylite formation at Vredefort by local melting of dry rocks. South African Journal of Geology 116(1), pp. 101-118. (10.2113/gssajg.116.1.101)
- Fagereng, A. 2013. On stress and strain in a continuous-discontinuous shear zone undergoing simple shear and volume loss. Journal of Structural Geology 50, pp. 44-53. (10.1016/j.jsg.2012.02.016)
- Treasure, A. M. et al. 2013. South African research in the Southern Ocean: New opportunities but serious challenges. South African Journal of Science 109(3-4), pp. 2-5. (10.1590/sajs.2013/a009)
- Wallace, L. M., Fagereng, A. and Ellis, S. 2012. Upper plate tectonic stress state may influence interseismic coupling on subduction megathrusts. Geology 40(10), pp. 895-898. (10.1130/G33373.1)
- Rowe, C. D., Fagereng, A., Miller, J. A. and Mapani, B. 2012. Signature of coseismic decarbonation in dolomitic fault rocks of the Naukluft Thrust, Namibia. Earth and Planetary Science Letters 333-4, pp. 200-210. (10.1016/j.epsl.2012.04.030)
- Fagereng, A. 2012. A note on folding mechanisms in the Cape Fold Belt, South Africa. South African Journal of Geology 115(2), pp. 137-144. (10.2113/gssajg.115.2.137)
- Fagereng, A. and Diener, J. F. A. 2011. San Andreas Fault tremor and retrograde metamorphism. Geophysical Research Letters 38(23), article number: L23303. (10.1029/2011GL049550)
- Fagereng, A., Remitti, F. and Sibson, R. H. 2011. Incrementally developed slickenfibers - Geological record of repeating low stress-drop seismic events?. Tectonophysics 510(3-4), pp. 381-386. (10.1016/j.tecto.2011.08.015)
- Fagereng, A. and Diener, J. F. A. 2011. Non-volcanic tremor and discontinuous slab dehydration. Geophysical Research Letters 38(15), article number: L15302. (10.1029/2011GL048214)
- Fagereng, A. 2011. Wedge geometry, mechanical strength, and interseismic coupling of the Hikurangi subduction thrust, New Zealand. Tectonophysics 507(1-4), pp. 26-30. (10.1016/j.tecto.2011.05.004)
- Fagereng, A. 2011. Frequency-size distribution of competent lenses in a block-in-matrix melange: Imposed length scales of brittle deformation?. Journal of Geophysical Research: Solid Earth 116(B5) (10.1029/2010JB007775)
- Fagereng, A. 2011. Fractal vein distributions within a fault-fracture mesh in an exhumed accretionary melange, Chrystalls Beach Complex, New Zealand. Journal of Structural Geology 33(5), pp. 918-927. (10.1016/j.jsg.2011.02.009)
- Fagereng, A. 2011. Geology of the seismogenic subduction thrust interface. Geological Society, London, Special Publications 359(1), pp. 55-76. (10.1144/SP359.4)
- Fagereng, A. and Toy, V. G. 2011. Geology of the earthquake source: an introduction. Geological Society, London, Special Publications 359(1), pp. 1-16. (10.1144/SP359.1)
- Fagereng, A. and Cooper, A. F. 2010. The metamorphic history of rocks buried, accreted and exhumed in an accretionary prism: an example from the Otago Schist, New Zealand. Journal of Metamorphic Geology 28(9), pp. 935-954. (10.1111/j.1525-1314.2010.00900.x)
- Fagereng, A. and Sibson, R. H. 2010. Mélange rheology and seismic style. Geology 38(8), pp. 751-754. (10.1130/G30868.1)
- Fagereng, A., Remitti, F. and Sibson, R. H. 2010. Shear veins observed within anisotropic fabric at high angles to the maximum compressive stress [Letter]. Nature Geoscience 3(7), pp. 482-485. (10.1038/NGEO898)
- Fagereng, A. and Cooper, A. F. 2010. Petrology of metabasalts from the Chrystalls Beach accretionary melange - implications for tectonic setting and terrane origin. New Zealand Journal of Geology and Geophysics 53(1), pp. 57-70. (10.1080/00288301003631806)
- Wallace, L. M. et al. 2009. Characterizing the seismogenic zone of a major plate boundary subduction thrust: Hikurangi Margin, New Zealand. Geochemistry, Geophysics, Geosystems 10(10) (10.1029/2009GC002610)
- Scott, J. M., Palin, J. M., Cooper, A. F., Fagereng, A. and King, R. P. 2009. Polymetamorphism, zircon growth and retention of early assemblages through the dynamic evolution of a continental arc in Fiordland, New Zealand. Journal of Metamorphic Geology 27(4), pp. 281-294. (10.1111/j.1525-1314.2009.00817.x)
- Fagereng, A. and Ellis, S. 2009. On factors controlling the depth of interseismic coupling on the Hikurangi subduction interface, New Zealand. Earth and Planetary Science Letters 278(1/2), pp. 120-130. (10.1016/j.epsl.2008.11.033)
- Fagereng, A., Harris, C., La Grange, M. and Stevens, G. 2008. Stable isotope study of the Archaean rocks of the Vredefort impact structure, central Kaapvaal Craton, South Africa. Contributions to Mineralogy and Petrology 155(1), pp. 63-78. (10.1007/s00410-007-0224-6)
Book sections
- Fagereng, A. and MacLeod, C. 2019. On seismicity and structural style of oceanic transform faults: A field geological perspective from the Troodos Ophiolite, Cyprus. In: Duarte, J. S. ed. Transform Plate Boundaries and Fracture Zones. Elsevier Books, pp. 437-459., (10.1016/B978-0-12-812064-4.00018-9)
- Fagereng, ?. 2019. Chapter 4 - What do earthquake magnitudes mean? Example of the Kaikōura, New Zealand, 2016 Event. In: Billi, A. and Fagereng, A. eds. Problems and Solutions in Structural Geology and Tectonics., Vol. 5. Developments in Structural Geology and Tectonics Elsevier, pp. 57-64., (10.1016/B978-0-12-814048-2.00004-1)
- Fagereng, ?. and Toy, V. G. 2019. Chapter 5 - Fluid-pressure effects on deformation: Analysis of the Lusi Mud Volcano. In: Billi, A. and Fagereng, A. eds. Problems and Solutions in Structural Geology and Tectonics., Vol. 5. Developments in Structural Geology and Tectonics Elsevier, pp. 67-74., (10.1016/B978-0-12-814048-2.00005-3)
- Fagereng, A., Diener, J. F., Ellis, S. and Remitti, F. 2018. Fluid-related deformation processes at the up- and downdip limits of the subduction thrust seismogenic zone: What do the rocks tell us?. In: Byrne, T. et al. eds. Geology and Tectonics of Subduction Zones: A Tribute to Gaku Kimura., Vol. 534. GSA Special Papers Geological Society of America, (10.1130/2018.2534(12))
Conferences
- Prior-Jones, M., Pinnion, J., Millet, M., Bagshaw, E., Fagereng, A. and Ballinger, R. 2020. An inclusive risk assessment tool for travel and fieldwork. Presented at: EGU General Assembly 2020, Online, 4-8 May 2020. Copernicus {GmbH}, (10.5194/egusphere-egu2020-7678)
Ymchwil
Rwy'n ddaearegwr strwythurol, ac mae fy ymchwil yn seiliedig ar arsylwadau o ddiffygion naturiol a pharthau cneifio. Rwy'n rhannu fy ngwaith mewn dwy thema allweddol, y ffordd mae diffygion yn llithro (daeargrynfeydd vs ymgripiad vs arddulliau llithro eraill) a sut mae diffygion yn tyfu ac yn cael eu hailgychwyn. Mae'r ddwy thema hyn yn berthnasol i ble y gall daeargrynfeydd ddigwydd a pha mor fawr y gall digwyddiadau o'r fath fod.
Ymddygiad slip fai
Ar hyn o bryd rwy'n canolbwyntio llawer o'm hamser ar y prosiect MICA a ariennir gan ERC, a ddisgrifiwyd yn ddiweddar yng nghylchgrawn Horizon, ac y mae tudalen prosiect ar gael ar ei gyfer. Mae'r prosiect wedi'i gynllunio i archwilio'r prosesau daearegol sy'n rheoli cyflymder ymadael fai, ac ymddygiad amrywiol namau sy'n darparu ar gyfer anffurfiad tectonig yng nghramen y Ddaear. Mae'r diffygion hyn yn llithro ar gyflymdra o filimetrau y flwyddyn, cyfradd sy'n debyg i dwf ewinedd bysedd, hyd at fetrau yr eiliad, cyfradd sy'n cynhyrchu daeargrynfeydd. Yn ystod y ddau ddegawd diwethaf, mae arsylwadau gan rwydweithiau GPS a seismomedr wedi dangos bod diffygion hefyd yn llithro ar gyfraddau canolradd rhwng yr aelodau terfynol hyn, mewn digwyddiadau a elwir bellach yn 'ddaeargrynfeydd araf'.
Nid yw'r prosesau ffisegol sy'n rheoli cyfradd slipiau fai yn cael eu deall yn iawn. Er enghraifft, ar hyn o bryd nid yw'n hysbys ar hyn o bryd pa mor araf a chyflym y mae daeargrynfeydd yn gysylltiedig. Mae cwestiynau pwysig o bwysigrwydd cymdeithasol yn cynnwys: Os bydd nam yn profi daeargrynfeydd araf, a all hefyd brofi daeargrynfeydd sy'n niweidiol? Os yw rhannau o nam yn profi daeargryn araf, a yw hyn yn cynyddu (neu'n lleihau) tebygolrwydd daeargryn niweidiol gerllaw? A all daeargrynfeydd arafu gyflymu a dod yn gyflym ac yn niweidiol? Mae prosiect MICA yn ceisio nodi effeithiau trwch parth ffawt, geometreg fewnol a chyfansoddiad. Gwneir hyn trwy waith maes manwl ac astudiaethau labordy o greigiau o barthau nam sy'n agored ar wyneb y Ddaear, neu'n hygyrch trwy ddrilio cefnforoedd. Yn seiliedig ar arsylwadau maes a microscale, rydym yn creu modelau ar gyfer geometreg realistig a mecanweithiau anffurfiad mewn parthau ffawtio mawr. O'r modelau hyn, rydym yn nodi newidynnau sy'n rheoli cyflymder llithro, ac yn caniatáu llithro ar ystod o gyflymderau. Mae'r rhagdybiaethau hyn yn cael eu profi gan arbrofion anffurfiannau rhifiadol a labordy.
Casglwyd samplau allweddol yn ystod Taith IODP 375 i ymyl tansugno Hikurangi Seland Newydd. Gallwch ddarllen fy mlog bwrdd llongau ar yr hyn y gallai drilio cefnfor ei ddweud wrthym am ddaeareg a mecaneg parth ffawt. Rydym wedi cyhoeddi the geology of the Pāpaku fault, a allai gynnal llithriad araf gweithredol, ac ar sut y gall gwaddodion heterogenaidd a thopograffeg llawr y môr reoli ymddygiad slip byrdwn subduction. Mae fy erthygl yn The Conversation yn esbonio peth o'r ymchwil hon, ac mae'r erthygl hon yn Futurum Careers yn darparu adnodd addysgol ar weithio fel daearegwr bwrdd llongau.
Mae canlyniadau allweddol eraill y prosiect hwn yn cynnwys
- Mae ymhelaethu straen yn digwydd o fewn parth cneifio heterogenaidd a gellir ei fesur gyda model rhifiadol o barth cneifio gludiog dau gam, fel y'i cyhoeddwyd gan Beall et al yn GRL (2019), a'i gymhwyso ymhellach i ddigwyddiadau llithro araf wrth gynnwys toriadau yn y model, fel gan Beall et al. yn G-Cubed (2019) .
- Gall isdynnu crwst cefnforol, os caiff ei hydradu a'i newid, fod mor wan â'r gwaddodion ar ei ben, fel yr eglurwyd gan Tulley et al in Science Advances (2020).
- Efallai mai'r rhwydweithiau gwythiennau trwchus a welir yn gyffredin mewn prismau cronedig exhumed yw cyfanswm, effaith integredig llawer o benodau torri lleol, sy'n cael eu gyrru gan hylif mewn ystod gymharol fach o ddyfnder - yn debyg i tremor mewn parthau is-sugno gweithredol, fel y trafodwyd yn seiliedig ar y Kuiseb Schist yn Fagereng et al. (Daeareg, 2018).
- Er mai phyllosilicadau yn aml yw'r elfen wannaf o barth cneifio, efallai na fyddant yn cael eu cydgysylltu ar straenau uchel, ac yn lle hynny gellir rheoli anffurfiad gan y cynhyrchion adwaith graen mân sy'n anffurfio'n hawdd trwy trylediad - fel Stenvall et al. (2019) yn esbonio yn eu herthygl GRL 'Weaker than weakest'.
Diffygion, twf fai, ac ail-ysgogi bai
Rwyf bellach wedi bod yn gweithio yn System Hollti Dwyrain Affrica ers sawl blwyddyn, yn enwedig yn y de, amagmatig, Hollt Malawi. Un pwynt o ddiddordeb yma yw sut y gall strwythurau hynafol reoli twf fai a daeargrynfeydd. Mae'r gwaith hwn wedi'i ariannu gan Gronfa Ymchwil Heriau Byd-eang yr EPSRC, ym mhrosiect PREPARE - cydweithrediad rhwng Peirianneg a Gwyddorau Daear ym Mhrifysgolion Bryste a Chaerdydd, gyda'r nod o wella gwytnwch daeargrynfeydd yn Nwyrain Affrica.
Er bod prosiect Malawi yn archwilio ffin plât graff, mae gen i ddiddordeb hefyd mewn diffygion sy'n ffurfio ymhell o ymylon platiau, fel namau diwedd ac ôl-rewlifol sy'n cynnal daeargrynfeydd mewn ymateb i gilio rhewlifoedd. Rwy'n PI o'r prosiect DAFNE (Drilio Diffygion Gweithredol yng Ngogledd Ewrop) sy'n ceisio drilio i mewn i'r nam Pärvie ôl-rewlifol yng ngogledd Sweden. Cefnogir y prosiect hwn gan gronfeydd o'r Rhaglen Drilio Gwyddonol Cyfandirol Ryngwladol (ICDP).
Addysgu
I am a fellow of the Higher Education Academy. I teach across the undergraduate programmes in the School of Earth and Environmental Sciences, primarily supporting Geology, Exploration and Resource Geology, and Environmental Geoscience students.
My teaching is focused on structural geology, but also larger scale tectonics and geodynamics, and BSc and MSci Dissertation Projects. You're also likely to find me teaching in the field.
During my time in Cardiff, I have been involved in teaching the following:
- Introduction to Geological Maps, Sections, and Structures (year 1)
- Structural Geology (year 2) and Structural Techniques (year 3)
- Geodynamics (years 3 and 4)
- Residential field courses on structural geology, including focus on structural controls on mineral deposits (in Cornwall for year 2 and in north Wales for year 3) and mapping training in Spain at the end of year 2. I have also participated in teaching the final year field course (in Cyprus).
- I was Director of Fieldwork from 2015 to 2018.
Prior to working in Cardiff, I was a Senior Lecturer in the Department of Geological Sciences at the University of Cape Town. There, I taught structural geology at BSc and BSc(Hons) level, geology to civil engineers, and supervised several BSc(Hons) and MSc projects.
Bywgraffiad
Education
1999-01 International Baccalaureate, Li Po Chun United World College of Hong Kong
2002-05 University of Cape Town, BSc(Hons) with distinction
2006-09 Otago University, PhD: 'Subduction-Related Fault Processes: Ancient and Active'
Academic Career
2006-09 Teaching Assistant, Otago University
2010-14 Lecturer - Senior Lecturer, Department of Geological Sciences, University of Cape Town
2014- Honorary Research Associate, Department of Geological Sciences, University of Cape Town
2014- Lecturer, School of Earth & Ocean Sciences, Cardiff University, UK
Affiliations
- American Geophysical Union
- Geological Society of America
- Geological Society of New Zealand
- Geological Society of Norway
- Seismological Society of America
External Activities
- Member of the Editorial Advisory Board, Journal of Structural Geology (2014- )
- Corresponding Editor, Special Publications of the Geological Society of London volume 359.
- Session Convenor, AGU Fall Meeting, 2013 and 2014.
- Member of Accreditation Committee, Faculty of Science, University of Cape Town (2011-2013)
- Undergraduate External Examiner (Rhodes University, South Africa, 2011-13)
- MSc Examiner (University of the Western Cape, South Africa)
Research Grants
Principal Investigator on a South African National Antarctic Programme grant (2012-2015) to study shear zones in the Maud Belt of Dronning Maud Land, East Antarctica, and a number of University of Cape Town Carnegie Foundation Research Development Grants (2010-2014) to work on structures in the Damara Belt, Namibia. Continuing Inkaba yeAfrica funded, long-term monitoring of intraplate seismicity in the Western Cape, South Africa (2011 onwards). Co-investigator on a New Zealand Marsden grant to study controls on creeping vs. locked segments of the Hikurangi Margin (PI: Susan Ellis, GNS Science). NRF Incentive Funding for Rated Researchers has funded initial work on fault systems in the East African Rift (2014), to be continued with student support from the GW4+ Doctoral Training Programme.
Research Student Supervision
PhD
-
Valeria Bilancia (2012 - present, registered at the University of Cape
Town): Geodynamics and continental extension in the East African Rift
System - origin and evolution of the Turkana Depression
- Michael S. Hodge (2014 - ): Development, deformation style, and seismic hazard of large normal faults
MSc
-
David McGibbon (Graduated, 2014, UCT): Shear zones of the Maud Belt,
Antarctica - Kinematics and deformation mechanisms. Now at Umvoto
Africa.
- Matthew Hodge (Graduated with distinction, 2013, UCT; GSSA
award for top MSc thesis in South Africa, 2013): Neotectonics of the
Southern Cape. Now at Remote Exploration Services.
- Clayton Cross
(Graduated with distinction, 2013, UCT): Metamorphic history of the
Matchless Amphibolite, Damara Belt, Namibia (co-supervised with Johann
Diener).
- Louis Smit (passed pending corrections, UCT): Microseismic monitoring of the Ceres-Tulbagh region, Western Cape, South Africa.
-
Sukey Thomas (awaiting examination results, UCT): Melt migration as
recorded in Sverdrupfjella, Maud Belt, Antarctica (co-supervised with
Johann Diener).
- Kaylan Hamel (Part-time, in progress, UCT):
Fluid-rock interaction in the Colenso Fault Zone, Saldania Belt, South
Africa. Employed at MSA.
- Nondumiso Ntombela (Part-time, in
progress, UCT): Fault-seal analysis and hydrocarbon potential of the
West Coast basins of South Africa. Employed at PetroSA.
- Michael Hartnady (in progress, UCT): Deformation history of the Southern Marginal Zone, Damara Belt, Namibia.
-
Gregory Byrnes (in progress, UCT): Structural and metamorphic history
of Sverdrupfjella, Antarctica (co-supervised with Johann Diener).
13 BSc(Hons) students at the University of Cape Town, including two prize-winning projects: Michael Hartnady (Structural Geology of the Southern Marginal Zone in Gaub Canyon, Namibia; GSSA award for top Honours project in southern Africa, 2013), and Sean Rennie (Strain distribution in the Kuckaus Mylonite Zone, Namibia; First runner-up in the Midland Valley Structure Competition, Undergraduates, 2012).
Anrhydeddau a dyfarniadau
- American Geophysical Union, Geophysical Research Letters, Editor's Citation for Excellence in Refereeing (2013)
- President's Award, National Research Foundation, South Africa (2013)
- Elsevier Young Scientist Award (2013)
- Claude Leon Foundation Merit Award for Young Lecturers (2012)
- University of Cape Town College of Fellows' Young Researcher Award (2012)
Aelodaethau proffesiynol
- American Geophysical Union
- Geological Society of America
- Geological Society of London
- Geological Society of Norway
Pwyllgorau ac adolygu
- Associate Editor, Geophysical Research Letters (2015 - present)
- Member of the Ramsay Medal committee, Tectonics Studies Group of the Geological Society of London (2016, 2017 [chair], 2018)
- Member of the Editorial Advisory Board, Journal of Structural Geology (2014 - present)
- Accreditation Committee, University of Cape Town (2011 - 2013)
- Journal reviewer, Earth and Planetary Science Letters, Earth Planets Space, G-Cubed, Geofluids, GSA Bulletin, GSA Special Papers, Geological Society of London Special Publications, Geology, Geophysical Research Letters, Gondwana Research, International Geology Reviews, Journal of Geophysical Research, Journal of Marine and Petroleum Geology, Journal of Structural Geology, Journal of the Geological Society of London, Nature Communications, Nature Geoscience, Precambrian Research, Pure and Applied Geophysics, Science China, South African Journal of Geology, Tectonics, Tectonophysics
- Grant reviewer, National Commission for Scientic and Technological Research (Chile),National Geographic, National Research Foundation (South Africa), National Science Foundation (USA), Natural Environment Research Council (UK), and Netherlands Organisation for Scientic Research
Meysydd goruchwyliaeth
I am interested in supervising PhD and Masters students. See past projects below for the sort of topics I tend to supervise, which are in the general areas of
- Structure and mechanics of subduction zones
- Hydrothermal vein systems
- Fault zone structure
- Development and rheology of shear zones
- Links between geological and geophysical observations
I am also happy to co-supervise structural geology elements of broader projects.
Current students
- Sara de Caroli - Failing under pressure: exploring the frictional-viscous transition in cold subduction zones
- Funded by a Cardiff University College of Physical Sciences and Engineering Studentship and the European Reseach Council
Goruchwyliaeth gyfredol
Prosiectau'r gorffennol
Myfyrwyr PhD blaenorol a'u teitlau prosiect (gyda chysylltiadau â'u traethodau ymchwil):
- Sophie Cox - Datblygu, arddull anffurfiad, a pherygl seismig o namau trawsnewid cefnforol
- Ariannwyd gan Raglen Hyfforddiant Doethurol GW4 NERC
- Christopher Tulley - daeareg llithriad araf dwfn a chryndod: Ansefydlogrwydd yn y drefn fiscous?
- Ariannwyd gan European Research Council
- Harold Leah - esblygiad mecanyddol, cynhyrchu pwysedd hylif, a slip araf bas mewn cipio'r
cylchfaoedd
- Ariannwyd gan European Research Council
- Christian Stenvall - Ffynonellau ac effeithiau hylifau mewn parthau cneifio retrograde cyfandirol
- Ariannwyd gan Goleg Gwyddorau Ffisegol a Pheirianneg Prifysgol Caerdydd
- Michael Hodge - Datblygu, arddull anffurfiad, a pherygl seismig o ddiffygion mawr arferol
- Ariannwyd gan Raglen Hyfforddiant Doethurol GW4 NERC
Myfyrwyr blaenorol MESci a'u teitlau prosiect:
- Oliver May (cyd-oruchwylio gyda Lucy Lu) - Rhaniad anffurfio ar ffiniau plât cydgyfeiriol oblique
- Manon Carpenter (cyd-oruchwylio gyda Jack Williams) - Sut mae diffygion yn tyfu mewn rhwygiadau cyfandirol? Cipolwg ar ddadansoddiad microstrwythurol o ddiffygion yn ne Malawi
- Paul Edwards (cyd-oruchwylio gydag Adam Beall) - Beth sy'n rheoli'r amrywiad mewn maint daeargryn rhwng parthau cipio, gyda seamountau wedi'u tynnu?
- Stephen James (cyd-oruchwylio gydag Adam Beall) - Pan fydd diffygion yn dod yn barthau cneifio: Modelu'r trawsnewidiad ffrithiannol-gludiog
- Aled Evans - Llif hylifol a mineraleiddio ar hyd parthau ffawtio hirhoedlog ac wedi'u hailactifadu: Enghraifft o Fynydd Carmel Head, Ynys Môn, Gogledd Cymru
- Dylan Ingman - Straen a phrosesau lleoleiddio straen ym mylonitau Belt Maud
